Detective Allan Pinkerton, working for the Union, becomes obsessed with Southern socialite Rose O'Neal Greenhow, a spy for the Confederacy.

A Pinkerton agent masquerades as a criminal in order to infiltrate a gang of counterfeiters that is using wealthy widow Lucy Randall as a front....

Postal Inspectors Carson and Underwood have been sent to investigate a series of robberies where both the driver and stagecoach disappear. They team...